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The Sony PlayStation began as the SNES PlayStation, an add-on peripheral for the Nintendo SNES, but after a dispute between Sony and Nintendo over control of licences, Sony was dropped from the project. Ken Kutaragi, the Sony researcher who had worked on the SNES PlayStation (and the sound chip for the SNES) did not want to give up. He wanted to continue working on this project and so, after some debate, Sony President Norio Ogha approved the start of the Sony Computer Entertainment Division, which would one day account for around half of Sony's revenues. This was Sony's entry into the world of video game consoles and would also mean competition for Nintendo. Kutaragi worked on this secret project to create a new 32-bit console that was simple yet powerful, easy to program for and cheap. His original concept was first shown at the Tokyo International Electronics Show in October 1991 and due for release in January 1993 for a price of US$200.